On what do you base that assertion?
Deaths directly caused by the substance? Lives wrecked by addiction? Medical conditions directly attributable?
And how do you back up the idea of disproportionate danger compared to other drugs, both legal and illegal?
ALL drugs can kill people. ALL substances can kill people.
In fact, the most famous case of death-by-ecstasy in the british media is
Leah Betts.
A girl who in reality, not mediamyth, drank so much water that the concentration of electrolytes in her body became so low as to damage her body beyond repair, causing coma and then death.
7 litres in 90 minutes.
No dancing, no hot club, she was sat with friends in a living room.
Ban water.
I'll leave this with my point on the "Drug Problem".
It has never been possible to legislate drug use away to nothing, even in countries with incredibly repressive enforcement regimes. You can only reduce the harm that drugs do by trusting people's judgements, educating them and allowing them to exercise their own choice responsibly.
The price in human lives destroyed or lost through tainted drugs, wars of control, wars of enforcement, lack of regulation in supply and ignorance/lack of proper information to consumers of drugs is only, in reality, set against the moral repugnance of certain types of people who object to mind-altering substances.
Who is more likely to sell an ecstasy tablet to a child? A street drug dealer or a licensed, educated and legal pharmacist?
Are street-prepared substances likely to be more or less harmful than licensed and legal pharmaceuticals?
'Immoral' behaviour cannot be legislated into non-existence.